Solid bar bending device

Abstract

The utility model belongs to the technical field of bar bending, and particularly relates to a solid bar bending device which comprises a cabinet body, a driving unit is arranged in the cabinet body, a support is fixedly connected to the top face of the cabinet body, a first hydraulic cylinder is assembled on the support, and a positioning assembly is arranged at the telescopic end of the first hydraulic cylinder. The top surface of the cabinet body is fixedly connected with a fixing plate, the top surface of the fixing plate is fixedly connected with a limiting plate, the top surface of the limiting plate is provided with a guide groove, the guide groove penetrates through the top surface of the cabinet body, the top surface of an inner cavity of the cabinet body is located on the lower side of the guide groove and is rotatably connected with a rotating disc, and the top surface of the rotating disc is eccentrically and fixedly connected with a pressing rod; a transmission assembly is arranged at the position, close to the top face, of an inner cavity of the cabinet body. According to the utility model, the contact surface with the surface of the bar can be increased, so that the bar is uniformly stressed when being bent, and the phenomenon of secondary bending is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of bar bending technology, specifically relating to a solid bar bending device. Background Technology

[0002] Bar bending involves applying external force to cause plastic deformation of a solid bar to achieve the desired curved shape. During the bending process, the outer layer of the bar is subjected to tensile stress, while the inner layer is subjected to compressive stress, thus bending it into the corresponding shape.

[0003] The current method for bending solid bars generally involves setting multiple limit stops on the bending table to position the bar. However, this method can easily affect the accuracy of the bar. When force is applied to the bar, the contact area between the bar and the positioning structure is small, resulting in a large force at the contact point and making the bar prone to secondary bending. Utility Model Content

[0004] The purpose of this invention is to provide a solid bar bending device that can increase the contact area with the bar surface, so that the bar is subjected to uniform force during bending and avoids secondary bending.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A solid bar bending device includes a cabinet, a drive unit is provided inside the cabinet, a bracket is fixedly connected to the top surface of the cabinet, a first hydraulic cylinder is mounted on the bracket, and a positioning component is provided at the telescopic end of the first hydraulic cylinder.

[0007] A fixing plate is fixedly connected to the top surface of the cabinet, and a limiting plate is fixedly connected to the top surface of the fixing plate. A guide groove is opened on the top surface of the limiting plate, and the guide groove penetrates the top surface of the cabinet. A turntable is rotatably connected to the top surface of the inner cavity of the cabinet below the guide groove. A pressure rod is eccentrically fixed to the top surface of the turntable. A transmission component is provided in the inner cavity of the cabinet near the top surface.

[0008] Furthermore, the positioning component includes a top block fixedly connected to the output end of the first hydraulic cylinder, a positioning block fixedly connected to the top surface of the fixing plate inside the guide groove, an arc-shaped groove being formed on the side wall of the top block opposite to the positioning block, the arc-shaped grooves on both sides forming a circular hole structure, and an annular groove being formed on the side wall of the pressure rod, the annular groove having an arc-shaped cross-section.

[0009] Furthermore, the transmission assembly includes a second hydraulic cylinder fixedly connected inside the cabinet, a rack fixedly connected to the output end of the second hydraulic cylinder, and a gear fixedly connected to the bottom surface of the turntable, the gear meshing with the rack.

[0010] Furthermore, a limit wheel is rotatably connected to the inner wall of the cabinet, and the rack abuts against the side wall of the limit wheel.

[0011] Furthermore, the drive unit includes a control box installed inside the cabinet, a radiator mounted on the top surface of the control box, a hydraulic pump mounted on the top of the control box, a reversing valve connected to the hydraulic pump, and multiple hydraulic pipes connected to the reversing valve.

[0012] Furthermore, the guide groove has an arc-shaped structure.

[0013] The technical effects achieved by this utility model are as follows:

[0014] This utility model discloses a solid bar bending device. Through the cooperation of the cabinet, fixing plate, limiting plate, positioning component and transmission component, and the positioning method of the top block and positioning block, it can fit against the surface of the bar, increase the contact area with the bar surface, so that the bar is subjected to uniform force during bending and avoids the phenomenon of secondary bending. Secondly, the drive unit provides power and can generate a large bending force, which is suitable for bending large diameter and high strength bars. It has high precision and is easy to operate. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0016] Figure 2 This is a rear view structural schematic diagram of an embodiment of the present utility model;

[0017] Figure 3 This is a partial structural schematic diagram of an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the transmission assembly according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of the turntable in an embodiment of this utility model.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Cabinet; 2. Control box; 3. Hydraulic pump; 4. Radiator; 5. Reversing valve; 6. Hydraulic pipe; 7. First hydraulic cylinder; 8. Bracket; 9. Fixing plate; 10. Limiting plate; 11. Guide groove; 12. Top block; 13. Positioning block; 14. Turntable; 15. Pressure rod; 16. Second hydraulic cylinder; 17. Rack; 18. Gear; 19. Limiting wheel; 20. Arc groove; 21. Annular groove. Detailed Implementation

[0022] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0023] like Figures 1-5 As shown, a solid bar bending device includes a cabinet 1, a drive unit is installed inside the cabinet 1, a bracket 8 is fixedly connected to the top surface of the cabinet 1, a first hydraulic cylinder 7 is mounted on the bracket 8, and a positioning component is provided at the telescopic end of the first hydraulic cylinder 7.

[0024] A fixing plate 9 is fixedly connected to the top surface of the cabinet 1. A limiting plate 10 is fixedly connected to the top surface of the fixing plate 9. A guide groove 11 is provided on the top surface of the limiting plate 10. The guide groove 11 has an arc-shaped structure. The guide groove 11 penetrates the top surface of the cabinet 1. A turntable 14 is rotatably connected to the top surface of the inner cavity of the cabinet 1, located below the guide groove 11. A pressure rod 15 is eccentrically fixed to the top surface of the turntable 14. A transmission assembly is provided near the top surface of the inner cavity of the cabinet 1.

[0025] like Figure 1 and Figure 4 As shown, the positioning assembly includes a top block 12 fixedly connected to the output end of the first hydraulic cylinder 7, a positioning block 13 fixedly connected to the top surface of the fixing plate 9 inside the guide groove 11, and arc-shaped grooves 20 respectively opened on the side wall opposite to the top block 12 and the positioning block 13. The two arc-shaped grooves 20 form a circular hole structure, and an annular groove 21 is opened on the side wall of the pressure rod 15. The cross section of the annular groove 21 is arc-shaped.

[0026] In the positioning component, the arc groove 20 and the annular groove 21 are located on the same horizontal plane. The arc groove 20 can increase the contact area with the bar stock, further improving the fixing effect. The annular groove 21 can limit the movement during bending, effectively preventing the bar stock from swinging up and down or shifting after being subjected to force, resulting in higher precision of the bent bar stock.

[0027] like Figure 4 As shown, the transmission assembly includes a second hydraulic cylinder 16 fixedly connected inside the cabinet 1. A rack 17 is fixedly connected to the output end of the second hydraulic cylinder 16, and a gear 18 is fixedly connected to the bottom surface of the turntable 14. The gear 18 meshes with the rack 17. The transmission assembly uses hydraulic power as its drive, providing high power output. It can efficiently bend solid metal bars (such as solid iron bars, solid steel bars, etc.), and its hydraulic transmission efficiency is higher than that of traditional electric or pneumatic bending methods.

[0028] like Figure 4As shown, a limiting wheel 19 is rotatably connected to the inner wall of the cabinet 1, and the rack 17 abuts against the side wall of the limiting wheel 19. The limiting wheel 19 can guide and limit the rack 17, allowing the rack 17 to move horizontally, thereby improving transmission efficiency.

[0029] like Figure 2 As shown, the drive unit includes a control box 2 installed inside the cabinet 1. A radiator 4 is mounted on the top surface of the control box 2, and a hydraulic pump 3 is mounted on the top of the control box 2. A reversing valve 5 is connected to the hydraulic pump 3, and multiple hydraulic pipes 6 are connected to the reversing valve 5. Specifically, all the facilities included in the drive unit are existing mature technologies, therefore, they will not be described in detail in this solution.

[0030] The working principle of this utility model is as follows: When it is necessary to bend the bar stock, the bar stock is first placed on one side of the guide groove 11 so that the bar stock is located between the top block 12 and the positioning block 13. Then the drive unit is run so that the first hydraulic cylinder 7 runs, thereby driving the top block 12 to hold the bar stock. At this time, the bar stock is located in the arc groove 20. The pressure generated by the first hydraulic cylinder 7 is used to fix the bar stock and at the same time increase the contact area between the bar stock and the arc groove 20.

[0031] Then, the second hydraulic cylinder 16 is activated. The second hydraulic cylinder 16 drives the rack 17 to mesh with the gear 18, so that the gear 18 drives the turntable 14 to rotate. The turntable 14 drives the pressure rod 15 to rotate eccentrically, and the rotation angle of the pressure rod 15 is consistent with the arc of the guide groove 11. The bar stock can be positioned by using the annular groove 21 on the pressure rod 15. While the pressure rod 15 is rotating eccentrically, it bends the bar stock, thereby improving the bending accuracy.

[0032] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A solid bar bending device, characterized in that: Includes a cabinet (1), inside which a drive unit is provided, and a bracket (8) is fixedly connected to the top surface of the cabinet (1). A first hydraulic cylinder (7) is mounted on the bracket (8), and a positioning component is provided at the telescopic end of the first hydraulic cylinder (7). A fixing plate (9) is fixedly connected to the top surface of the cabinet (1). A limiting plate (10) is fixedly connected to the top surface of the fixing plate (9). A guide groove (11) is provided on the top surface of the limiting plate (10). The guide groove (11) penetrates the top surface of the cabinet (1). A turntable (14) is rotatably connected to the top surface of the inner cavity of the cabinet (1) below the guide groove (11). A pressure rod (15) is eccentrically fixed to the top surface of the turntable (14). A transmission assembly is provided near the top surface of the inner cavity of the cabinet (1).

2. The solid bar bending device according to claim 1, characterized in that: The positioning assembly includes a top block (12) fixedly connected to the output end of the first hydraulic cylinder (7), a positioning block (13) fixedly connected to the top surface of the fixing plate (9) inside the guide groove (11), an arc-shaped groove (20) is opened on the side wall opposite to the top block (12) and the positioning block (13), and the arc-shaped grooves (20) on both sides form a circular hole structure. An annular groove (21) is opened on the side wall of the pressure rod (15), and the cross section of the annular groove (21) is arc-shaped.

3. The solid bar bending device according to claim 1, characterized in that: The transmission assembly includes a second hydraulic cylinder (16) fixedly connected inside the cabinet (1), a rack (17) fixedly connected to the output end of the second hydraulic cylinder (16), and a gear (18) fixedly connected to the bottom surface of the turntable (14), the gear (18) meshing with the rack (17).

4. A solid bar bending device according to claim 3, characterized in that: The inner wall of the cabinet (1) is rotatably connected to a limiting wheel (19), and the rack (17) abuts against the side wall of the limiting wheel (19).

5. A solid bar bending device according to claim 1, characterized in that: The drive unit includes a control box (2) installed inside the cabinet (1), a radiator (4) is mounted on the top surface of the control box (2), a hydraulic pump (3) is mounted on the top of the control box (2), a reversing valve (5) is connected to the hydraulic pump (3), and multiple hydraulic pipes (6) are connected to the reversing valve (5).

6. A solid bar bending device according to claim 1, characterized in that: The guide groove (11) has an arc-shaped structure.

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